阿米巴肝脓肿手术引流的指征是（）。

A.脓腔直径超过10cm

B.肝穿刺抽脓2～3次而未缩小

C.脓肿继发感染或出血者

D.脓肿位于右叶

E.经抗阿米巴治疗和穿刺引流后仍有高热不退

根据对话的上下文，在横线上写出所缺少的内容。

A: Good morning, boy. ①_______?

B: I feel terrible.

A: ②_______ have you been like this?

B: About two days.

A: Let me take your temperature first.

B: Anything serious?

A: Don't worry. It's ③_______. You've just got a cold.

B: Then what should I do?

A: You'd better ④_______. And you'll be all right in a few days.

B: Oh, that's fine. ⑤_______.

A: You're welcome.